Projection Screens and Projection Systems

A projection screen and projection technology, which is applied in the field of projection systems, can solve problems such as limited contrast effects, and achieve the effects of reduced reflectivity, high gain, and high contrast

Active Publication Date: 2021-11-12
APPOTRONICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

therefore, figure 1 The structure in c has limited effect on improving contrast

Method used

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  • Projection Screens and Projection Systems
  • Projection Screens and Projection Systems
  • Projection Screens and Projection Systems

Examples

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Embodiment Construction

[0032] Hereinafter, specific embodiments according to the present invention will be described in detail with reference to the accompanying drawings. It should be emphasized that all dimensions in the drawings are only schematic and not necessarily shown in true scale, and thus are not limiting. For example, it should be understood that the thicknesses, thickness ratios and angles of the layers in the projection screen shown in the figure are not shown according to the actual size and ratio, but are only for the convenience of illustration.

[0033] 1. Overview of the projection screen

[0034] figure 2 a and b are schematic diagrams illustrating the structure of a projection screen according to an embodiment of the present invention. like figure 2 As shown in a, the projection screen includes a light absorbing layer 10 , a microstructure layer 20 , a substrate layer 30 and a diffusion layer 40 . Projection light and ambient light can pass through the diffusion layer 40 a...

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Abstract

The invention discloses a projection screen and a projection system using the projection screen. The projection screen includes a microstructure layer and a light-absorbing layer that are sequentially stacked from the incident side of the projection light. The microstructure layer includes a plurality of microstructure units, and each of the microstructure units includes a reflective surface and is connected to the reflective surface. The opposite lens surface, and the reflective surface is set at a position matching the focal point of the lens surface. According to the present invention, it is possible to provide a projection screen and a projection system that are resistant to ambient light and have high gain and high contrast.

Description

technical field [0001] The present invention relates to projection screens and projection systems. In particular, the present invention relates to a projection screen capable of resisting ambient light and improving contrast and a projection system using the projection screen. Background technique [0002] In recent years, with the continuous improvement of the brightness of projectors, the application of projection display systems has become more and more extensive. The screen is an important part of the projection display system, and it has a great influence on the image quality of the projection display system. [0003] Usually, the contrast of the screen is an important parameter to evaluate the quality of a screen. In the usage environment of the screen, in addition to the projection light from the projector, there is often ambient light from the surrounding environment incident on the screen. Existing projection screens reflect both projected and ambient light. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/602
CPCG03B21/602G03B21/60G02B5/003G02B5/0284G03B21/625G02B3/0056G03B21/62
Inventor 王霖孙微王杰胡飞李屹
Owner APPOTRONICS CORP LTD
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